I do not pretend to understand the moral universe;
the arc is a long one, my eye reaches but little ways;
I cannot calculate the curve and complete the figure by
the experience of sight; I can divine it by conscience.
And from what I see I am sure it bends towards justice.
I think we are dealing with the scientific analogue of the moral figure above. To inquire is to act as if inquiry pursued far enough will end in truth. It’s a regulative principle, not a dogma, but a regulative principle is akin to a leap of faith. Here we have a parting of the ways between those who think the end is near what we think we already know and those who think it’s more likely further down the road. The two camps sort past and present ideas according to each one’s guess what the future holds.